This is the second major update of our list of psychologists (plus a few stray neuroscientists, therapists, students and psych-bloggers) who Tweet. Follower counts were correct as of late August / early Sept 2011. Compare with the first and second versions of the list compiled in November 2010 and March 2011. The Digest feeds and editorial team are in purple highlight.

Shu Fai Cheung, @sfcheungInterested in methodology, personality, and social psychology.Most blog articles in my blog are in Chinese, but I have both Chinese and English tweets in Twitter.Academia Profile:http://umac.academia.edu/ShuFaiCheungThanks.

I think it would be easier to create a list under @ResearchDigest named something like "psych_who_tweet" so anyone on Twitter can follow that list you maintain instead of updating here. Also people who want to be added can mantion @ResearchDigest with add to psych list.

My name is Jeffrey C. Singer and I would like to be added too. My tweeter information is below:@jsingerphd

Licensed Psychologist with 25+ years of varied mental health field experience, with 10+ of forensics, dedicated to appreciating the unique needs of each person.Parsippany, NJ · http://www.morrispsych.com/about/associates-staff/jeffrey-c-singer-ph-d/

Can you add me, please? I'm new to twitter (my agent, @janelitagent, suggested I join). I'm a member of the BPS and I tweet on psychological issues, particularly those that intersect with literature, film and the writing of fiction. Thanks. @MargretGeraghty